I say it depends on your cash flow and whether or not you can afford to pay yourself a reasonable salary for the work you’re doing.
Can a corporation use a spreadsheet instead of a traditional general ledger to keep the corporate books? There are certainly corporations that think they can. I know many of my tax and accounting brethren are shouting “NO!” In response to this question. My answer is more on the fence. It depends on what your corporation is up to.